Electromagnetic actuating device, in particular for a valve
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United States of America Patent
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May 6, 1997
Issued Date -
N/A
app pub date -
Mar 7, 1995
filing date -
Apr 7, 1992
priority date (Note) -
Expired
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Abstract
Electromagnetic actuating device, in particular for a valve, includes a plunger which is axially movable between two extreme positions, an electromagnetic coil surrounding the plunger actuating it, and a permanent magnet holding the plunger in one of its extreme positions, and at least one pole plate located between plunger and permanent magnet. The holding force of the permanent magnet is considerably increased by providing that the permanent magnet, which is configured as a flat disk, be completely covered by the pole plate on the side facing the plunger.
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